Brake-shoe



r um m 2. n9 5 m (No Model.)

W. 1). SARGENT. BRAKE SHOE.

Patented Dec. 3, 1889.

UNITED STATES VILLIAM D. SARGENT, OF EVANSTON,

SHOE COMPANY, OF

BRAKE- ASSIGNOR TO THE CONGDON BRAKE CHICAGO, ILLINOIS.

SHOE.

SPECIFICATION forming part of Letters Patent No. 416,379, dated December 3, 1889.

Application filed September 28, 1889. Serial No. 325,372. (No model.)

To (ZZZ whom it may concern.-

Be it known that 1, WILLIAM I). SARGENT, a citizen of the United States, residing at Evanston, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Brake-Shoes, of which the following is a specification.

My invention relates to brakeshoes for railway-cars wherein the brake-beam is hung from the body of the car instead of from the truck; and the class of brake-shoes to which my improvement is applied is that in which both the flange and the tread of the wheel are engaged by the shoe. A common difliculty encountered with brake-shoes of this character, when hung in the manner described, is that owing to the lateral swinging of the brake-beam, which carries the shoe or the partial rotation of the car-trucks in their axes in passing over curves in the track, which tends to throw the wheels out of line with the brake-shoes, little reliance can be placed upon the existence of a proper alignment between the flange of the wheel and the recess in the shoe formed to receive it at the instant when the brakes are applied. As a result, the flange of one wheel is liable at any time to pass wholly outside the confines of its adjacent shoe and the flange of the other wheel at the same't-ime to meet the tread portion of its adjacent shoe. The effect of this is obviously not only to impair the effectiveness of the brakes upon the wheels at the time when the inaccuracy occurs, but also to produce unequal and highly injurious wear upon the brake-shoes.

The difficulty above mentioned is completely overcome by means of my invention, which is illustrated in the accompanying drawings, in which- Figure 1 is a rear View of abrake-shoe provided with my improvement; Fig. 2, an inner side elevation of the same, and Fig. 3 a cross-sectional view taken on the line 3 3 of Fig. 2 and viewed in the direction of the arrow.

A is the brake-shoe, having the usual treadbearing portion 25, flange-bearing portion 8, and flange-lip 5'. Upon the flange-lip and projecting therefrom in a direction substantially at right angles with the tread of the shoe, and preferably in about the median line of the shoe, is an extension B of the flangelip, of suflicient length to extend to a point' within the periphery of the wheel flange when the brake-shoe is at its greatest distance from the wheel. This extension should preferably be made of wrought-iron, malleable iron, or steel, and I prefer to make it in the form of a bolt cast into the flange-lip. For this purpose theflange-lip is cast with a projection q, inclosing the extension, which may be roughened or barbed, as represented at p in Fig. 3, to increase the hold upon it of the metal. At the base of the projection a boss 0 may be formed with advantage in the casting around the extension B.

When the brake-shoes are placed in position upon the brake-beam, the extension B, by projecting within the peripheries of the wheel near the sides of 'the wheel-flanges,

serve to limit the lateral throw of the brakebeams, so that the wheel-flanges must at all having a flange-lip r, of a metal extension upon the flange lip, substantially as described.

2. In combination with a brake-shoe A, having a flange-lip r, the metal extension B, cast into the flange-lip, substantially as described.

- 3. In combination with a brake-shoe A, the flange-lip 1' thereof formed with a projection q, and the bolt B, cast within the said projection and forming an extension of the flangelip, substantially as described.

4. In combination with a brake-shoe A, the flange-lip r thereof formed with a projection q, provided with a boss 0, and bolt B, cast within the projection q and forming an extension of the flange-lip, substantially as described.

WILLIAM D. SARGENT.

In presence of- J. W. DYRENFORTH, M. J. BowERs. 

